In-line fluid flow control valve



FIG. 1 is a perspective view of an in-line fluid flow control valve showing my new design;

FIG. 2 is a right end elevational view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a side elevational view thereof, the view from the opposite side being a mirror image. 

The ornamental design for an in-line fluid flow control valve, as shown and described. 